Finding the Fourth Proportional to 108,145,485.37, 149,438,734.93 and 78,725,741.99
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Solution
The fourth proportional to 108,145,485.37, 149,438,734.93 and 78,725,741.99 is: 108,785,634.92
Step by Step Solution
- Step 1: Write the proportion equation
108,145,485.37 : 149,438,734.93 = 78,725,741.99 : x - Step 2: Convert to fraction form
108,145,485.37/149,438,734.93 = 78,725,741.99/x - Step 3: Cross multiply
108,145,485.37x = 149,438,734.93 × 78,725,741.99 - Step 4: Simplify right side
108,145,485.37x = 11,764,675,289,411,180 - Step 5: Solve for x
x = 11,764,675,289,411,180/108,145,485.37 - Step 6: Final answer
x = 108,785,634.92
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.